The image of Stanley Ann Dunham from a primary school photograph apparently taken in Vernon, Texas, shows that the image you posted, from the w.t.p.o.t.us blog, ISN'T THE SAME GIRL.
I wouldn't rely on the images as absolute proof when it is my understanding that the School Records indicate that they are the same girl.
I'll tell you what. I don't really need the younger picture of Stanley Ann with the crooked tooth, if you will acknowledge that the older picture with the crooked tooth in the same place is really Stanley Ann. Deal?
p.s. I have to go. (Responsibilities.) I'll be back shortly, hopefully less than an hour.